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Monte Carlo Simulation of Biaxial Phase Transitions in Y-Shaped Molecular System(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2010年03期
Page:
26-31
Research Field:
物理学
Publishing date:

Info

Title:
Monte Carlo Simulation of Biaxial Phase Transitions in Y-Shaped Molecular System
Author(s):
Luo Wenling; Liu Hong
School of Physics and Technology,Nanjing Normal University,Nanjing 210097,China
Keywords:
M onte Car lo simu lation;  biax ia l nem atics;  phase transition
PACS:
O753.2
DOI:
-
Abstract:
Monte C arle sim ulation is carr ied out to study the phase behav io r in Y- shaped liqu id c rystal m o lecular system. The phase transitions from isotropic to un iax ial nem atic and from un iax ial nem atic to b iax ia l nem a tic phase are obta ined, and the phase d iagram s in the plane ofm o lecular interarm ang le and temperature are g iven. The resu lt show s that the occurrence o f b iax ial nem atic phase is c lo se ly re la ted to the mo lecu la r b iax ia lity. The re la tion between Landau po int ( at wh ich system d irectly go es from iso trop ic to biax ia l phase) tem pera ture and mo lecu lar structure param eters such as interarm ang le, arm s. leng th ra tio is ob tained from M onte C arlo s imu lation and is compared w ith tha t from m ean fie ld theory de riv ation.

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Last Update: 2013-04-08